change swipe screen android

1. Dip:device independent pixels (device independent pixels). Different devices have different display effects, this is related to the device hardware, generally we support WVGA, HVGA and QVGA recommended use this, do not rely on pixels.It is important to note that dip is related to screen density and that the screen density is related to specific hardware and that the hardware settings are incorrect and ma

1. dip: Device Independent pixels (device independent pixel ). different devices have different display effects. This is related to the hardware of the device. We recommend that you use this function to support WVGA, hvga, and qvga without pixels.Note that the dip is related to the screen density, and the screen density is related to the specific hardware. Incorrect hardware settings may cause the dip to fa

Problems encountered in programming: When creating a small music player, you want to automatically change the layout when switching between the horizontal and vertical screens. Landscape screen: Portrait screen: VcD4KPHA + pgltzybzcm9 "http://www.bkjia.com/uploadfile/Collfiles/20131228/2013122809122545.jpg" alt = "\"> You can create the layout_port and

X can be interpreted as hdpi according to the mobile phone screen standard, 480x320 is mdpi, and 320x240 is ldpi. According to the latest data, hdpi and mdpi of all Android mobile phones account for a ratio of more; System Version, up to 2.1 ~ The proportion of 2.3 is also an absolute proportion. We can use this as the basis for adaptation. we need to pay attention to this data at any time, especially in

==================== Problem Description ====================Use Videoview to do the display. Play all the way a little problem, no card, very real-time, but, more can not play, also reported wrong. Automatically eject a dialog box that cannot be played.The same is true with Surfaceview.I hear it's because the Android bottom only supports decoding.Do you have to transplant ffmpeg? But this is soft decoding ah, the efficiency is too low, and seemingly

For example, if you want to force the software display to change the software interface as the device turns, you can use Android: screenorientation to force the software screen display direction.Note that the red part is modified. Android: screenorientation = "Landscape" is used to determine the horizontal mode

Preface Record A abnormal problem encountered when dynamically replacing Fragment. StatementWelcome to repost, but please keep the original source of the article :) blog Park: http://www.cnblogs.com Farmer's uncle: http://over140.cnblogs.com Body First look at the Code:Private void addFragmentToStack (Fragment fragment ){ FragmentTransaction ft = getSupportFragmentManager (). beginTransaction (); Ft. replace (android. R. id. content, fragment ); Ft.

How does the Android font size adapt to the change in resolution at different resolutions?Suppose you need to adapt to 320x240,480x320 resolution. Create a new folder under the Res directory values-320x240, values-480x320. Then in the folder values, values-320x240 and values-480x320 new XML file Dimens.xml, the XML file content is as follows:For different resolutions, the value of the btntextsize is differe

File directory: packages/inputmethods/pinyinime/src/COM/Android/inputmethod/pinyin/environment. Java /*** The Key height for Landscape mode. It is relative to the screen height.*/ Private Static final float key_height_ratio_landscape = 0.147f; Change to Private Static final float key_height_ratio_landscape = 0.105f; Google pinyin has four input methods, wh

Want to make an animation, a will run the villain, from the right side of the screen to the right, so did a try:Three steps are required to accomplish this:1. Do a frame animation (frame animation), composed of a number of pictures, the formation of the villain running continuously.2. Make a displacement animation so that the villain from left to right to produce movement.3. Start the animation in OnStartThe following are explained separately:---The f

A screen is required for the company's business needs. But the screenshot function is far from enough for the functional requirements of the project, we are doing an artboard software. After screenshots like QQ are needed, we can see our own defined tools. There are brushes, buttons and so on. Android comes with a very easy-to-do feature, and it's just enough to intent an implicit call. But he is the applic

Android adds the screen saver function to the App, which is similar to the advertisement function ., Androidapp When a friend does not perform any operation for every activity in the app for 30 seconds, a screen saver is displayed. The screen saver keeps the screen bright,

Asynctaskloader time is being used. When the phone is unlocked, repeat the load data, code, as follows:Static class Couponshopqueryloader extendsasynctaskloaderAt this time, very strange phenomenon is out, each phone unlocked, the data will be repeated, repeatedly loaded. After consulting Cursorloader source code found that the original is too tender, loader use. There is no strict adherence to the Android official Help documentation for how the demo

package is changed well, open the manifest file, the manifest in the original package name Com.pepper.util, all changes to Com.pp.util. Save after changing.4. Change the package name of the main package according to the 2nd step method. The middle will be a step more than the 2nd step, click Continue on it.5, now the package name has been changed, but the program may still have some can not make their own initiative to

If you write an android desktop sliding switch Screen Control (1) First, this control should inherit ViewGroup: Initialization: Public class MyGroup extends ViewGroup {private Scroller mScroller; private float mOriMotionX; private float handler; private VelocityTracker handler; private int mTouchState = running; private static final int TOUCH_STATE_REST = 0; private int mTouchSlop; private int mMaximumVelo

Then open the mobile app, the first thing we see is a full screen of the Welcome screen, in this interface display when the entire phone screen will only show this interface, the above title bar, and the top of the mobile phone status bar will disappear, only the Welcome page to the end of the jump to other pages, The title bar and status bar are returned and dis

Defined in the style as follows: If you want the entire app to be the same, you can change the Androidmanifest.xml and refer to the style on application: If you just want to act on an activity, then change the theme of one of the actions. The above is a small set to introduce Android through the style to remove the app's head and Interface Full

1. Realize that all activity in the application is full screen Join directly in the manifest Copy Code code as follows: Android:theme= "@android: Style/theme.notitlebar.fullscreen" 2. Achieve a single activity full screen Copy Code code as follows: Requestwindowfeature (Window.feature_no_title); GetWindow (). SetFlags

When drawing a dynamic image in the canvas, if a fixed background image is used, only one small genie is moving! In this case, you have to re-draw the background image without frame, reducing the efficiency! I tried various methods and eventually failed! If anyone has a good method, please provide it. Thank you! The following are some examples of the exploration process: 1. An article about redrawing images. However, it can only be applied to the chang